CN105915055A - Voltage Conversion Apparatus - Google Patents
Voltage Conversion Apparatus Download PDFInfo
- Publication number
- CN105915055A CN105915055A CN201610094588.0A CN201610094588A CN105915055A CN 105915055 A CN105915055 A CN 105915055A CN 201610094588 A CN201610094588 A CN 201610094588A CN 105915055 A CN105915055 A CN 105915055A
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- China
- Prior art keywords
- input
- switch element
- transducer
- electrical path
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/08—Three-wire systems; Systems having more than three wires
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
Abstract
A voltage conversion apparatus includes connection terminals to which a battery, a capacitor, and a protected load are respectively connected, a first DC-DC converter having input/output terminals, a second DC-DC converter having input/output terminals, a first power path having one end connected to the first connection terminal and the other end connected to the first input/output terminal, a second power path having one end connected to the second input/output terminal and the other end connected to the third input/output terminal, a third power path having one end connected to the fourth input/output terminal and the other end connected to the second connection terminal, and a fourth power path having one end connected to a midway part of the second power path and the other end connected to the third connection terminal.
Description
Technical field
The voltage that the present invention relates to the voltage from multiple DC sources carries out boost or be supplied to after blood pressure lowering load turns
Changing device.
Background technology
Owing to environmental protection, the fuel consumption (oil consumption) of the earth improve, develop and there is idle stop function and slow down again
The vehicle of raw function.This vehicle is provided with the multiple DC sources being such as made up of battery, capacitor etc. and by
The voltage conversion device that dc-dc etc. are constituted.Voltage from each DC source is carried out by voltage conversion device
Being supplied to load after boosting or blood pressure lowering, the regenerated electric power that the electromotor that possessed by automobile produces is stored in capacitor etc..
Additionally, the voltage conversion device shown in Fig. 7 of the such as voltage conversion device of patent documentation 1, patent documentation 2
In, the electric power road between load (narrow voltage range subsidiary engine) and the battery needing protection to make service voltage not decline
Footpath is provided with switch.Further, in the electrical path between this load and switch, connect via dc-dc
There is Reserve Power Division.In electrical path between battery and switch, connect and have electromotor, starting motor (starter motor)
And other load (subsidiary engine, wide voltage range subsidiary engine).
Such as, when producing regenerated electric power due to vehicle deceleration in electromotor, switch is switched on, and DC-DC turns
Parallel operation drives, and regenerated electric power is stored in Reserve Power Division.Additionally, when vehicle generates electricity when beyond idle stop
When not producing regenerated electric power in machine, switch is switched on, and dc-dc drives, and discharges in Reserve Power Division.Now, exist
In patent documentation 1, making Reserve Power Division discharge, until reaching following voltage: dc-dc can work, and storing
Electricity portion can persistently drive load the specified time limit when the voltage transient falling of battery.
Additionally, when restarting electromotor after vehicle idling stops, making starting electric motor starting, thus start in motor and flow
Super-high-current, the voltage transient of battery declines.Therefore, now, switch is disconnected, and load and Reserve Power Division are by from battery
Breaking with starting motor TURP, the electric power of Reserve Power Division is provided to load via dc-dc.Thus, load with
The electrical power stabilization ground of Reserve Power Division persistently drives.
The dc-dc of voltage conversion device is such as by Bidirectional up-down die mould copped wave electricity as patent documentation 3～5
Road is constituted.These Bidirectional up-down die mould chopper circuits are made up of two half-bridge circuits and reactors etc..Each half-bridge circuit
It is made up of two switch elements connected.Between the switch element of the half-bridge circuit that one end of reactor is connected to a side,
Between the switch element of the half-bridge circuit that the other end of reactor is connected to the opposing party.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2011-155791 publication
Patent documentation 2: No. 4835690 publications of Japanese Patent
Patent documentation 3: Japanese Unexamined Patent Publication 2001-268900 publication
Patent documentation 4: Japanese Unexamined Patent Publication 2001-292567 publication
Patent documentation 5: Japanese Unexamined Patent Publication 2005-295671 publication
Summary of the invention
Invent problem to be solved
In the load being connected with voltage conversion device, exist and bring obstacle when service voltage is less than setting to work
Load.For such load, it is necessary to stably provide electric power.
Additionally, in the case of connecting multiple DC source in voltage conversion device, if laying particular stress on the direct current using a side
The electric power of power supply, the then lost of life of the DC source of the party.Therefore, necessary in order to extend the life-span of each DC source
Effectively apply flexibly the electric power of each DC source.Further, in order to battery and capacitor being made corresponding to deceleration regeneration function
In the case of being connected with voltage conversion device for multiple DC sources, preferably increase is stored in the regenerated electric power of capacitor
Apply flexibly chance.
The problem of the present invention is to provide a kind of voltage conversion device, and this voltage conversion device can stably supply to load
To electric power, effectively apply flexibly the electric power of each DC source.
For solving the means of problem
The voltage conversion device of the present invention is connected to the 1st DC source, the 2nd DC source and load, will be each
The voltage of DC source is converted to different size of voltage and is supplied to load.Further, this voltage conversion device possesses:
1st connects terminal, and it is connected with described 1st DC source；2nd connects terminal, itself and described 2nd DC source
Connect；3rd connects terminal, and it is connected with described load；1DC-DC transducer, it has the 1st input and output
Terminal and the 2nd input and output terminal；2DC-DC transducer, it has the 3rd input and output terminal and the 4th input
Lead-out terminal；1st electrical path, its one end is connected terminal and connects with the 1st, the other end and the 1st input and output terminal
Connect；2nd electrical path, its one end is connected with the 2nd input and output terminal, the other end and the 3rd input and output terminal
Connect；3rd electrical path, its one end is connected with the 4th input and output terminal, and the other end and the 2nd connects terminal and connects；
And the 4th electrical path, its one end is connected to the midway of the 2nd electrical path, and the other end and the 3rd connects terminal and connects.
According to above-mentioned, it is possible to by the 1st connect terminal, the 1st electrical path, 1DC-DC transducer, the 2nd
Electrical path, the 4th electrical path and the 3rd connect terminal and supply the electric power from the 1st DC source to load.This
Time, it is possible to utilize 1DC-DC transducer be converted to by the voltage from the 1st DC source and load corresponding voltage.
Further, it is possible to by the 2nd connection terminal, the 3rd electrical path, 2DC-DC transducer, the 2nd electrical path,
4th electrical path and the 3rd connects terminal and supplies the electric power from the 2nd DC source to load.Now, it is possible to profit
With 2DC-DC transducer the voltage from the 2nd DC source be converted to and load corresponding voltage.Accordingly, it is capable to
Enough supply electric power from the 1st DC source and the 2nd DC source to load stabilization.Furthermore it is possible to increase respectively each directly
The electric power of stream power supply apply flexibly chance, thus effectively apply flexibly the electric power of each DC source.
Additionally, in the present invention, in above-mentioned voltage conversion device, 1DC-DC transducer can be by elements below structure
Become: the 1st switch element and the 2nd switch element, they be connected in series in the same direction with the 2nd input and output terminal it
Between；1st choking-winding, its one end is connected between the 1st switch element and the 2nd switch element, the other end and the 1st
Input and output terminal connects；1st capacitor, its one end be connected to the 1st input and output terminal and the 1st choking-winding it
Between, other end ground connection；And the 2nd capacitor, its one end is connected to the 2nd input and output terminal and the 2nd switch element
Between, other end ground connection.And, 2DC-DC transducer can be made up of elements below: the 3rd switch element and
4th switch element, they be connected in series in the same direction and the 3rd input and output terminal between；2nd choking-winding,
Its one end is connected between the 3rd switch element and the 4th switch element, and the other end and the 4th input and output terminal connect；
3rd capacitor, its one end is connected between the 4th input and output terminal and the 2nd choking-winding, other end ground connection；With
And the 4th capacitor, its one end is connected between the 3rd input and output terminal and the 4th switch element, other end ground connection.
Additionally, in the present invention, in above-mentioned voltage conversion device, 1DC-DC conversion equipment is it may also is that can
Carry out boosting by the voltage from the 1st input and output terminal input and from the 2nd input and output terminal output, and can be by
Carry out blood pressure lowering from the voltage of the 2nd input and output terminal input and export from the 1st input and output terminal.And, the
2DC-DC conversion equipment it may also is that the voltage from the 3rd input and output terminal input can be carried out blood pressure lowering and from the
4 input and output terminals output, and can by from the 4th input and output terminal input voltage carry out boosting and from the 3rd
Input and output terminal exports.
Additionally, in the present invention, can also possess in above-mentioned voltage conversion device: the 5th electrical path, its one end connects
In the midway of the 1st electrical path, the other end and the 3rd connects terminal and connects；And be arranged in the 5th electrical path
5th switch element.
Additionally, in the present invention, above-mentioned voltage conversion device can also possess the 6th be arranged in the 4th electrical path
Switch element.
Additionally, in the present invention, above-mentioned voltage conversion device may is that be also equipped with controlling each dc-dc and
The control portion of each switch element, described load is to need protection so that being loaded by protection of not declining of service voltage, the
Large current load and the electromotor of generation regenerated electric power of stream super-high-current during work it is connected in parallel on 1 DC source,
2nd DC source can store the regenerated electric power produced by electromotor.In the case of Gai, control portion generate electricity at electromotor
In the case of, when large current load does not works, make each dc-dc work, connect the 5th switch element,
Disconnecting the 6th switch element, when large current load works, control portion at least makes 2DC-DC transducer work, disconnected
Open the 5th switch element, connect the 6th switch element.
Additionally, in the present invention, above-mentioned voltage conversion device may is that and be also equipped with detection from 2DC-DC transducer
The current detecting part of the electric current of side inflow 1DC-DC transducer, control portion in the case of electromotor does not generates electricity, when
During large current load work, according to the detected value of current detecting part, the electric current flowing through 1DC-DC transducer is limited
Below the setting not hindering the driving loaded by protection.
Additionally, in the present invention, above-mentioned voltage conversion device may is that the voltage being also equipped with detecting the 2nd DC source
Voltage detection department, control portion is not in the case of electromotor generates electricity, when large current load does not works, if voltage
The voltage of the 2nd DC source that test section detects than the big setting of voltage driven needed for being loaded by protection with
On, then make each dc-dc work, disconnect the 5th switch element, connect the 6th switch element, if the 2nd
The voltage of DC source is less than setting, then control portion makes 2DC-DC transducer work, and stops 1DC-DC
Transducer, disconnects the 5th switch element, connects the 6th switch element.
Additionally, in the present invention, above-mentioned voltage conversion device may is that control portion when large current load does not works,
Make each dc-dc work, connect the 5th switch element, disconnect the 6th switch element, from there through each DC-DC
Transducer and the 5th switch element are to the electric power by protection load supply the 2nd DC source, and switch unit by the 5th
Part is to the electric power by protection load supply the 1st DC source.But also may is that control portion works at large current load
Time, make each dc-dc work, disconnect the 5th switch element, connect the 6th switch element, from there through the
2DC-DC transducer and the 6th switch element are to the electric power by protection load supply the 2nd DC source, and pass through each
Dc-dc is to the electric power of large current load supply the 2nd DC source.
Further, in the present invention, above-mentioned voltage conversion device may is that, control portion produces regenerated electric power in electromotor
Time, make each dc-dc work, connect the 5th switch element, disconnect the 6th switch element, thus utilize again
2nd DC source is charged by raw electric power, and by the 5th switch element to by protection load supply regenerated electric power.
Invention effect
In accordance with the invention it is possible to provide a kind of voltage conversion device, this voltage conversion device can stably supply to load
To electric power, effectively apply flexibly the electric power of each DC source.
Accompanying drawing explanation
Fig. 1 is the figure of the circuit structure of the voltage conversion device illustrating embodiments of the present invention.
The figure of the action of the circuit of Fig. 1 when Fig. 2 is to illustrate standby.
Fig. 3 is the figure of the action of the circuit illustrating Fig. 1 when starting motor initial start-up.
The figure of the action of the circuit of Fig. 1 when Fig. 4 is to illustrate first traveling.
Fig. 5 is the figure of the action of the circuit illustrating Fig. 1 when producing regenerated electric power.
The figure of action of the circuit of Fig. 1 when Fig. 6 is to illustrate non-power generating and when starting that motor is non-to be started.
Fig. 7 be after idle stop is shown start electric motor starting time and the situation that voltage is more than setting of capacitor
Under the figure of action of circuit of Fig. 1.
Fig. 8 be after idle stop is shown when starting electric motor starting and the voltage of capacitor is less than in the case of setting
The figure of action of circuit of Fig. 1.
Fig. 9 is the figure of other actions of the circuit illustrating Fig. 1.
Figure 10 is the figure of other actions of the circuit illustrating Fig. 1.
Figure 11 is the figure of the circuit structure of the voltage conversion device illustrating embodiments of the present invention.
Label declaration
1: the 1DC-DC transducer；
2: the 2DC-DC transducers；
4: large current load；
4a: start motor；
6: loaded by protection；
10: control portion；
11: capacitor (the 2nd DC source)；
12: battery (the 1st DC source)；
13: electromotor；
14: voltage detection department；
15: current detecting part；
100: voltage conversion device；
C1: capacitor (the 1st capacitor)；
C2: capacitor (the 2nd capacitor)；
C3: capacitor (the 3rd capacitor)；
C4: capacitor (the 4th capacitor)；
L1: choking-winding (the 1st choking-winding)；
L2: choking-winding (the 2nd choking-winding)；
N1: the 1 connects terminal；
N2: the 2 connects terminal；
N3: the 3 connects terminal；
Q1:FET (the 1st switch element)；
Q2:FET (the 2nd switch element)；
Q3:FET (the 3rd switch element)；
Q4:FET (the 4th switch element)；
Q5:FET (the 5th switch element)；
Q6:FET (the 6th switch element)；
S1: the 1 electrical path；
S2: the 2 electrical path；
S3: the 3 electrical path；
S4: the 4 electrical path；
S5: the 5 electrical path；
T1: the 1 input and output terminal；
T2: the 2 input and output terminal；
T3: the 3 input and output terminal；
T4: the 4 input and output terminal.
Detailed description of the invention
Hereinafter, it is explained with reference to embodiments of the present invention.In the various figures, to same section or corresponding part mark
Note identical label.
First, voltage conversion device 100 and the circuit structure of its periphery of present embodiment are described with reference to Fig. 1.Separately
Outward, in Fig. 1, solid line represents that power system connects up, and dotted line represents that control system wiring or communication system connect up (afterwards
Each figure in the most such).
Regenerative system 200 shown in Fig. 1 is mounted in the vehicle with idle stop function and deceleration regeneration function.Again
Raw system 200 includes voltage conversion device 100, capacitor 11, battery 12, electromotor 13, large current load
4,5 are loaded, by protection load 6, upper ECU (electronic-controlled installation) 7 and IG-SW (ignition switch) 8.
Capacitor 11 is made up of double layer capacitor, is an example of the present invention " the 2nd DC source ".Except this it
Outward, such as the 2nd DC source can be constituted by lithium ion battery, lithium-ion capacitor or nickel-hydrogen chargeable cell etc..
Battery 12 is made up of traditional lead battery, is an example of the present invention " the 1st DC source ".Also may be used
To be constituted the 1st DC source by battery etc. in addition.
Electromotor 13 is driven by the electromotor of not shown vehicle and produces electric power.Such as, when normal vehicle operation,
In the case of the voltage of battery 12 declines, the drive force electromotor 13 of electromotor is utilized to generate electricity.And,
During vehicle deceleration or during vehicle breaking operation, vehicle also continues to travel, even if electromotor is not supplied with fuel, electromotor
Also rotate.Therefore, utilize this rotatory force to drive electromotor 13, generate electricity.By electromotor 13 when this deceleration etc.
The electric power produced is referred to as regenerated electric power.Capacitor 11 carries out electric power storage to electric power produced by electromotor 13.
Additionally, during vehicle deceleration, stop electromotor being supplied fuel.It is to say, carry out owing to not consuming fuel
Generating, the specific fuel consumption of vehicle improves.And, when normally travelling, in the case of the voltage of battery 12 is sufficient,
Electromotor 13 is not utilized to generate electricity.
Large current load 4 is made up of the motor etc. flowing super-high-current when working.This large current load 4 include for
Start the starting motor 4a of electromotor.As other examples, large current load 4 also including, not shown power turns
To the motor of device or dynamo-electric brake etc..
Load 5 is made up of the electric component etc. that can not use in stopping at vehicle idling.Load 5 such as includes electricity
Hot plate evaporators etc..
6 be made up of following such electric component by protection load: vehicle idling also must supply in stopping electric power and
And while starting (start motor 4a) etc. needs to carry out protection and makes supply electricity when idle stop rear engine is restarted
The electric component that pressure does not declines.Navigator, sound equipment, air-conditioning, instrument, variator is such as included in protection load 6
And safety device etc..
Upper ECU7 is such as connected with voltage conversion device 100 via CAN (Controller Area Network).
Upper ECU7 sends information or the action instruction etc. representing vehicle-state to voltage conversion device 100.
One end of IG-SW8 is connected with the positive pole of battery 12.The other end of IG-SW8 is with voltage conversion device 100 even
Connect.The minus earth of battery 12.Large current load 4, electromotor 13, load 5 and upper ECU7 and battery
12 is in parallel.
Voltage conversion device 100 will be converted to different size of from the voltage of each DC source 11,12 connected
Voltage also supplies to by protection load 6.Voltage conversion device 100 possesses electrical path S1～S5, connection terminal
N1～N3,1DC-DC transducer 1,2DC-DC transducer 2, FET (field-effect transistor) Q5,
FETQ6, control portion 10, voltage detection department 14 and current detecting part 15.
1st connects connection on terminal N1 the positive pole of battery 12.2nd connects connection on terminal N2 capacitor
11.3rd connects connection on terminal N3 has by protection load 6.It addition, be positioned at the voltage conversion device representing Fig. 1
Other white circles on the dashdotted frame of 100 also illustrate that (symbol omits connection terminal, and each figure afterwards is the most such as
This).
1DC-DC transducer 1 has the 1st input and output terminal T1 and the 2nd input and output terminal T2.2nd
Dc-dc 2 has the 3rd input and output terminal T3 and the 4th input and output terminal T4.
One end of 1st electrical path S1 be connected with the 1st terminal N1 connect, the other end of the 1st electrical path S1 with
1st input and output terminal T1 of 1DC-DC transducer 1 connects.One end and the 1st of 2nd electrical path S2
2nd input and output terminal T2 of dc-dc 1 connects, the other end and the 2nd of the 2nd electrical path S2
3rd input and output terminal T3 of dc-dc 2 connects.One end of 3rd electrical path S3 and 2DC-DC
4th input and output terminal T4 of transducer 2 connects, and the other end of the 3rd electrical path S3 and the 2nd connects terminal
N2 connects.
One end of 4th electrical path S4 is connected to the midway of the 2nd electrical path S2, the 4th electrical path S4 another
One end is connected terminal N3 and connects with the 3rd.One end of 5th electrical path S5 is connected in the 1st electrical path S1
On the way, the other end of the 5th electrical path S5 is connected to the midway of the 4th electrical path S4.That is, the 5th electrical path
The other end of S5 is connected terminal N3 via a part for the 4th electrical path S4 with the 3rd and connects.
The Px of Fig. 1 is the 2nd electrical path S2 and the junction point of the 4th electrical path S4.Py is the 4th electrical path
S4 and the junction point of the 5th electrical path S5.Pz is the 1st electrical path S1 and the connection of the 5th electrical path S5
Point.
FETQ5 and FETQ6 is respectively by MOSFET (the Metal Oxide Semiconductor Field of N-channel type
Effect Transistor) constitute.
FETQ5 is arranged in the 5th electrical path S5.The drain electrode of FETQ5 is connected with the 4th electrical path S4.FETQ5
Source electrode and the 1st electrical path S1 connect.It is connected in the diode D5 between source electrode and the drain electrode of FETQ5 in parallel
It it is the parasitic diode of FETQ5.The anode of diode D5 and the 1st electrical path S1 connect.Diode D5's
Negative electrode and the 4th electrical path S4 connect.Therefore, diode D5 makes electric current from the 1st electrical path S1 effluent to
4 electrical path S4 sides.FETQ5 is an example of the present invention " the 5th switch element ".
FETQ 6 is arranged between the junction point Py in the 4th electrical path S4 and junction point Px.The leakage of FETQ6
Pole is connected with the 2nd electrical path S2.The source electrode of FETQ6 and the 5th electrical path S5 and the 3rd connect terminal T3 even
Connect.The diode D6 being connected in parallel between source electrode and the drain electrode of FETQ6 is the parasitic diode of FETQ6.Two
The anode of pole pipe D6 and the 5th electrical path S5 and the 3rd connect terminal N3 and connect.The negative electrode of diode D6 and
2 electrical path S2 connect.Therefore, diode D6 makes electric current connect terminal from the 5th electrical path S5 side or the 3rd
N3 effluent is to the 2nd electrical path S2 side.FETQ6 is an example of the present invention " the 6th switch element ".
1DC-DC transducer 1 is by FETQ1, FETQ2, choking-winding L1, capacitor C1 and capacitor
C2 is constituted.
FETQ1 and FETQ2 is made up of the MOSFET of N-channel type respectively, be connected in series in the same direction with
Between 2 input and output terminal T2.In detail, the source ground of FETQ1.The drain electrode of FETQ1 and FETQ2
Source electrode connect.The drain electrode of FETQ2 is connected with the 2nd input and output terminal T2.FETQ1 is the present invention the " the 1st
Switch element " example.FETQ2 is an example of the present invention " the 2nd switch element ".
The diode D1 being connected in parallel between source electrode and the drain electrode of FET Q1 is the parasitic diode of FET Q1.
The diode D2 being connected in parallel between source electrode and the drain electrode of FET Q2 is the parasitic diode of FETQ2.Diode
The plus earth of D1.The negative electrode of diode D1 is connected with the anode of diode D2.The negative electrode of diode D2 and
2 input and output terminal T2 connect.Therefore, diode D1 and diode D2 makes current direction the 2nd input/output terminal
Sub-T2 side.
One end of choking-winding L1 is connected between FETQ1 and FETQ2.The other end of choking-winding L1 and the 1st
Input and output terminal T1 connects.Choking-winding L1 is an example of the present invention " the 1st choking-winding ".
One end of capacitor C1 is connected between the 1st input and output terminal T1 and choking-winding L1.Capacitor C1
Other end ground connection.One end of capacitor C2 is connected between the 2nd input and output terminal T2 and FETQ2.Electric capacity
The other end ground connection of device C2.Capacitor C1 is an example of the present invention " the 1st capacitor ".Capacitor C2 is this
One example of " the 2nd capacitor " of invention.
2DC-DC transducer 2 is by FETQ3, FETQ4, choking-winding L2, capacitor C3 and capacitor
C4 is constituted.
FETQ3 and FETQ4 is made up of the MOSFET of N-channel type respectively, be connected in series in the same direction with
Between 3 input and output terminal T3.In detail, the source ground of FETQ3.The drain electrode of FETQ3 and FETQ4
Source electrode connect.The drain electrode of FETQ4 is connected with the 3rd input and output terminal T3.FETQ3 is the present invention the " the 3rd
Switch element " example.FETQ4 is an example of the present invention " the 4th switch element ".
The diode D3 being connected in parallel between source electrode and the drain electrode of FETQ3 is the parasitic diode of FETQ3.And
The diode D4 that connection is connected between source electrode and the drain electrode of FETQ4 is the parasitic diode of FETQ4.Diode
The plus earth of D3.The negative electrode of diode D3 is connected with the anode of diode D4.The negative electrode of diode D4 and
3 input and output terminal T3 connect.Therefore, diode D3 and diode D4 makes current direction the 3rd input/output terminal
Sub-T3 side.
One end of choking-winding L2 is connected between FETQ3 and FETQ4.The other end of choking-winding L2 and the 4th
Input and output terminal T4 connects.Choking-winding L2 is an example of the present invention " the 2nd choking-winding ".
One end of capacitor C3 is connected between the 4th input and output terminal T4 and choking-winding L2.Capacitor C3
The other end and ground connection.One end of capacitor C4 is connected between the 3rd input and output terminal T3 and FETQ4.Electricity
The other end ground connection of container C4.Capacitor C3 is an example of the present invention " the 3rd capacitor ".Capacitor C4
It it is an example of the present invention " the 4th capacitor ".
The structural circuit of 1DC-DC transducer 1 and the structural circuit of 2DC-DC transducer 2 are relative to the 2nd
The junction point Px of electrical path S2 and the 4th electrical path S4 is symmetrical.
Control portion 10 is made up of CPU and memorizer.Control portion 10 controls the action of each dc-dc 1,2.
In detail, control portion 10 is connected to FETQ1, Q2, Q3, Q4 of each dc-dc 1,2
Grid (omits diagram, the most such in each figure afterwards).Control portion 10 is to each FETQ1, Q2, Q3, Q4
Grid input drive signal so that each FETQ1, Q2, Q3, Q4 on/off.Thus, each DC-DC
Transducer 1,2 becomes "on" position or stops "on" position.It addition, control portion 10 utilizes PWM (pulse width
Degree modulation) control the on-off action (switching operation) of the on/off of each FETQ1, Q2, Q3, Q4.
Thus, in each dc-dc 1,2, carry out boosting or the blood pressure lowering of voltage.
In 1DC-DC transducer 1, it is possible to use the on-off action of FETQ1, Q2 is to from the 1st input and output
The voltage of terminal T1 input boosts, and from the 2nd input and output terminal T2 output.Furthermore, it is possible to utilize FETQ1,
The on-off action of Q2 carries out blood pressure lowering to the voltage from the 2nd input and output terminal T2 input, and from the 1st input/output terminal
Sub-T1 exports.Further, by connecting FETQ2, two-way communication state is become.
The on-off action of FETQ3, Q4 can be utilized in 2DC-DC transducer 2 to from the 3rd input/output terminal
The voltage of sub-T3 input carries out blood pressure lowering, and from the 4th input and output terminal T4 output.Furthermore, it is possible to utilize FETQ3,
Voltage from the 4th input and output terminal T4 input is boosted by the on-off action of Q4, and from the 3rd input/output terminal
Sub-T3 exports.Further, by connecting FETQ4, two-way communication state is become.
Control portion 10 also controls the on/off action of FETQ5, Q6.In detail, control portion 10 connects respectively
The grid (omitting diagram, the most such in each figure afterwards) of FETQ5, Q6.Control portion 10 to each FETQ5,
The grid input drive signal of Q6, makes each FETQ5, Q6 turn on/off.Thus, the 4th electrical path S4 or
5 electrical path S5 become "on" position or stops "on" position.
Additionally, control portion 10 is in communication with each other with upper ECU7.Specifically, control portion 10 receives from upper ECU7
Represent information or the action instruction of vehicle-state.It addition, the control system eliminated in Fig. 1 in voltage conversion device 100
System wiring or the diagram (the most such in each figure afterwards) of communication system wiring.
Current detecting part 15 is arranged on the junction point Px in the 2nd electrical path S2 and 1DC-DC transducer 1
Between 2nd input and output terminal T2.Current detecting part 15 detection flows through the electric current of the 2nd electrical path S2, from the
The electric current of 2DC-DC transducer 2 side inflow 1DC-DC transducer 1.Control portion 10 starts motor 4a work
Time, according to the detected value of current detecting part 15, limit the electric current flowing through 1DC-DC transducer 1.
The voltage of voltage detection department 14 sensing capacitor 11.Control portion 10 according to the detection voltage of voltage detection department 14,
The charge volume of calculable capacitor 11, controls dc-dc 1,2 and the action of FETQ5, Q6.
Then, the action of account for voltage conversion equipment 100 is carried out with reference to Fig. 2～Figure 10.
When IG-SW8 is off, vehicle is in halted state, and regenerative system 200 is in holding state.
Now, owing to upper ECU7 or load 5,6 having to flow through electric current and allow them to carry out action, such as Fig. 2
Shown in middle arrow, the electric power of battery 12 is provided to load 5, upper ECU7 and voltage conversion device 100.
When standby, in voltage conversion device 100, each dc-dc 1,2 be in stopping (FETQ1～
Q4 disconnects) state, FETQ5, Q6 are also at off-state.Therefore, from battery 12 to voltage conversion device 100
The electric power of the 1st connection terminal N1 supply by the 1st electrical path S1, the 5th electrical path S5, FETQ5
Diode D5, the 4th electrical path S4 and the 3rd connect terminal N3, are provided to be protected load 6.
And, when making IG-SW8 connect when the operation due to driver, initial start-up electromotor, therefore plays galvanic electricity
Machine 4a is by initial start-up.Now, as shown by the arrows in Figure 3, the motor 4a electric cranking by battery 12 is started.
Additionally, in voltage conversion device 100, control portion 10 make each dc-dc 1,2 stop (disconnecting FETQ1～
Q4), disconnect FETQ6, connect FETQ5.Thus, the electric power of battery 12 connects terminal N1 by the from the 1st
1 electrical path S1, the 5th electrical path S5, FETQ5, the 4th electrical path S4 and the 3rd connect terminal N3,
It is provided to be protected load 6.
When making vehicle travel for the first time by the operation of driver after electromotor starts, generate electricity in electromotor 13.
As shown by the arrows in Figure 4, the electric power that electromotor 13 is generated electricity is provided to load 5, upper ECU7 and voltage
Conversion equipment 100.
When this travels for the first time, in voltage conversion device 100, control portion 10 makes each dc-dc 1,2
Stop (disconnecting FETQ1～Q4), disconnect FETQ6, connect FETQ5.Therefore, the electric power of self generator 13 is carried out
Terminal N1 is connected by the 1st electrical path S1, the 5th electrical path S5, FETQ5, the 4th electric power road from the 1st
Footpath S4 and the 3rd connects terminal N3, is provided to be protected load 6.
In vehicle travels, such as when driver discharge gas pedal, brake pedal thus during vehicle deceleration, send out
Motor 13 produces regenerated electric power.As shown by the arrows in Figure 5, this regenerated electric power be provided to load 5 from electromotor 13,
Upper ECU7, battery 12 and voltage conversion device 100.Now, in the case of the voltage of battery 12 declines,
Battery 12 is electrically charged (omitting diagram) by regenerated electric power.
When regenerated electric power produces, in voltage conversion device 100, control portion 10 connects FETQ5, disconnects FETQ6.
Thus, regenerated electric power from the 1st connect terminal N1 by the 1st electrical path S1, the 5th electrical path S5, FETQ5,
4th electrical path S4 and the 3rd connects terminal N3, is provided to be protected load 6.
It addition, control portion 10 makes each dc-dc 1,2 work, terminal N1 will be connected by the 1st from the 1st
The voltage of the regenerated electric power that electrical path S1 is transfused to is converted to the voltage corresponding with capacitor 11, and connects from the 2nd
Terminal N2 is to capacitor 11 output power.
Specifically, such as control portion 10 makes FETQ1, Q2 of 1DC-DC transducer 1 carry out on-off action
(SW), continue to disconnect the FETQ3 of 2DC-DC transducer 2, continue to turn on FETQ4.Thus, from the 1st
Connect the voltage of the regenerated electric power that terminal N1 is transfused to by the 1st electrical path S1 by 1DC-DC transducer 1
Boosting.Further, the regenerated electric power after this conversion from 1DC-DC transducer 1 through the 2nd electrical path S2,
After the FETQ4 of 2DC-DC transducer 2, choking-winding L2 and the 3rd electrical path S3, connect end from the 2nd
Sub-N2 is output to capacitor 11.
Or, control portion 10 continues to disconnect the FETQ1 of 1DC-DC transducer 1, continues to turn on FETQ2, makes
FETQ3, Q4 of 2DC-DC transducer 2 carries out on-off action.Thus, connect terminal N1 from the 1st to pass through
The voltage of the regenerated electric power that the 1st electrical path S1 is transfused to is through the choking-winding L1 of 1DC-DC transducer 1
After FETQ2 and the 2nd electrical path S2, it is input to 2DC-DC transducer 2.Further, this regeneration electricity
The voltage of power is passed through from 2DC-DC transducer 2 by 2DC-DC transducer 2 blood pressure lowering, the electric power after this conversion
After 3rd electrical path S3, connect terminal N2 from the 2nd and be output to capacitor 11.
Capacitor 11 is by the power charge connecting terminal N2 output from the 2nd.That is, regenerated electric power is stored in electric capacity
In device 11.
In the case of electromotor 13 does not generates electricity under state outside vehicle is in idle stop, start motor 4a the most not
Start.This is the situation that the voltage of such as battery 12 and capacitor 11 is not high enough.As shown by the arrows in Figure 6,
When the non-power generating of such electromotor 13 and start motor 4a inoperative time, the electric power of battery 12 is provided to
Load 5, upper ECU7 and voltage conversion device 100.
Now, as shown in Figure 6, in voltage conversion device 100, control portion 10 connects FETQ5, disconnects FETQ6.
Thus, the electric power from battery 12 connects terminal N1, the 1st electrical path S1, the 5th electrical path by the 1st
S5, FETQ5, the 4th electrical path S4 and the 3rd connect terminal N3, are provided to be protected load 6.
It addition, control portion 10 makes each dc-dc 1,2 work, from capacitor 11 by the 2nd connection terminal
The voltage that N2 and the 3rd electrical path S3 are transfused to is converted to by dc-dc 1,2 and is protected load 6
Corresponding voltage, and to the 1st electrical path S1 output power.
Specifically, such as control portion 10 makes FETQ3, Q4 of 2DC-DC transducer 2 carry out on-off action,
Continue to disconnect the FETQ1 of 1DC-DC transducer 1, continue to turn on FETQ2.Thus, pass through from capacitor 11
The voltage that 2nd connection terminal N2 and the 3rd electrical path S3 are transfused to is boosted by 2DC-DC transducer 2.And
And, the electric power after this conversion is changed through the 2nd electrical path S2 and 1DC-DC from 2DC-DC transducer 2
After the FETQ2 and choking-winding L1 of device 1, it is output to the 1st electrical path S1.
Or, control portion 10 continues to disconnect the FETQ3 of 2DC-DC transducer 2, continues to turn on FETQ4, makes
FETQ1, Q2 of 1DC-DC transducer 1 carries out on-off action.Thus, from capacitor 11 by the 2nd even
The voltage that connecting terminal N2 and the 3rd electrical path S3 are transfused to is through the choking-winding L2 of 2DC-DC transducer 2
After FETQ4 and the 2nd electrical path S2, it is input to 1DC-DC transducer 1.Further, should be from electricity
The voltage of container 11 is by 1DC-DC transducer 1 blood pressure lowering, and the electric power after this conversion is from 1DC-DC transducer 1
It is output to the 1st electrical path S1.
As it has been described above, be output to the electricity of the capacitor 11 of the 1st electrical path S1 from 1DC-DC transducer 1
Power connects terminal N3 by the 5th electrical path S5, FETQ5, the 4th electrical path S4 and the 3rd, is provided
Give by protection load 6.Thus, capacitor 11 is discharged.
When the idle stop jump condition becoming pole low-speed running state or halted state when vehicle and specify is set up, idling
Stopping starts.Idle stop jump condition now is e.g. when electromotor is restarted, it is possible to by protection load 6
The electric power of supply remains in capacitor 11 or battery 12.The establishment judgement of idle stop jump condition and/or idling
The control stopped is carried out by upper ECU7.In idle stop, electromotor 13 does not generates electricity or does not produce regeneration electricity
Power.
Afterwards, when idle stop terminates, owing to electromotor is restarted, when starting motor 4a starting, control portion 10 profit
Voltage by voltage detection department 14 sensing capacitor 11.Now, if the capacitor that detects of voltage detection department 14
The voltage of 11 is more than setting (than driving the value big by voltage necessary to protection load 6), then such as Fig. 7 institute
Showing, control portion 10 makes each dc-dc 1,2 work, and disconnects FETQ5, connects FETQ6.
Specifically, such as control portion 10 makes FETQ3, Q4 of 2DC-DC transducer 2 carry out on-off action.
Thus, the voltage of sufficient power from capacitor 11 is carried out after the 2nd connects terminal N2 and the 3rd electrical path S3, by 2DC-DC
Transducer 2 boosts, with corresponding with by protection load 6.Further, the electric power after this conversion is from 2DC-DC transducer
2 connect terminal N3 by the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd, are provided to
By protection load 6.
Or, control portion 10 continues to disconnect the FETQ3 of 2DC-DC transducer 2, continues to turn on FETQ4.By
This, as shown by the arrows in Figure 7, carry out the electric power of sufficient power from capacitor 11 by the 2nd connection terminal N2, the 3rd electrical path
S3, the FETQ4 of 2DC-DC transducer 2, the 2nd electrical path S2, the 4th electrical path S4, FETQ6
And the 3rd connect terminal N3, be provided to be protected load 6.
Further, as shown by the arrows in Figure 7, the electric power carrying out sufficient power from capacitor 11 connects terminal N2, the 3rd electricity through the 2nd
After power path S3,2DC-DC transducer the 2 and the 2nd electrical path S2, it is input to 1DC-DC conversion
Device 1.
Now, control portion 10 continues to disconnect the FETQ1 of 1DC-DC transducer 1, continues to turn on FETQ2.By
This, the electric power being input to 1DC-DC transducer 1 from 2DC-DC transducer 2 is turned by 1DC-DC
The FETQ2 of parallel operation 1, the 1st electrical path S1 and the 1st connect terminal N1, be provided to start motor 4a or
Other load 4,5.
Or, control portion 10 makes FETQ1, Q2 of 1DC-DC transducer 1 carry out on-off action.Thus,
The voltage inputted to 1DC-DC transducer 1 from 2DC-DC transducer 2 is dropped by 1DC-DC transducer 1
Pressure, with corresponding with starting motor 4a or other load 4,5.Further, the electric power after this conversion is from 1DC-DC
Transducer 1 connects terminal N1 by the 1st electrical path S1 and the 1st, be provided to start motor 4a or other
Load 4,5.
As it has been described above, in the case of the charge volume of capacitor 11 is many, carry out the electric power of sufficient power from capacitor 11 not only by quilt
Protection load 6 supply, also by starting motor 4a or other load 4,5 supply.
Additionally, when carrying out the electric power of sufficient power from capacitor 11 to load 4,5 supply, control portion 10 utilizes current detecting part
15 detections are from the electric current of 2DC-DC transducer 2 side inflow 1DC-DC transducer 1.Further, control portion 10
Detected value (current value) according to current detecting part 15, is limited in the electric current flowing into 1DC-DC transducer 1 not
Hinder below the setting of the driving being loaded 6 by protection.
Specifically, control portion 10 controls FETQ1, Q2 or the 2DC-DC for making 1DC-DC transducer 1
FETQ3, Q4 of transducer 2 carries out the conducting dutycycle of the pwm signal of on-off action, so that current detecting part
The detected value of 15 is below setting.Thus, when starting motor 4a work (during except initial start-up), even if
Electric current flows into from capacitor 11 and starts motor 4a, also will not to by the service voltage of protection load 6 from capacitor 11
Drop to the degree of the driving hindering this load 6, continued to be stably driven with by protection load 6.
On the other hand, when the starting motor 4a after idle stop starts, if the electricity that voltage detection department 14 detects
The voltage of container 11 is less than setting, and the most as shown in Figure 8, control portion 10 makes 2DC-DC transducer 2 work,
Stop 1DC-DC transducer 1, disconnect FETQ5, connect FETQ6.
Now, such as control portion 10 makes FETQ3, Q4 of 2DC-DC transducer 2 carry out on-off action.By
This, carry out the voltage of sufficient power from capacitor 11 after the 2nd connects terminal N2 and the 3rd electrical path S3, by 2DC-DC
Transducer 2 boosts, with corresponding with by protection load 6.Further, the electric power after this conversion is from 2DC-DC transducer
2 connect terminal N3 by the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd, are provided to
By protection load 6.
Or, control portion 10 continues to disconnect the FETQ3 of 2DC-DC transducer 2, continues to turn on FETQ4.By
This, as shown by the arrows in Figure 8, carry out the electric power of sufficient power from capacitor 11 by the 2nd connection terminal N2, the 3rd electrical path
S3, the FETQ4 of 2DC-DC transducer 2, the 2nd electrical path S2, the 4th electrical path S4, FETQ6
And the 3rd connect terminal N3, be provided to be protected load 6.
Additionally, due to 1DC-DC transducer 1 stops (FETQ1, Q2 disconnect), FETQ5 disconnects, electric capacity
Device 11 is electrically disconnected with by protection load 6, battery 12 etc..Therefore, when starting motor 4a and starting, though electric current
Flow into from battery 12 and start motor 4a, do not decline to by the service voltage of protection load 6 from capacitor 11, quilt
Protection load 6 continues to be stably driven with.
As shown in above-mentioned Fig. 7 and Fig. 8, vehicle can also be according to the voltage of capacitor 11 and regulation in idle stop
The comparative result of value, to the electric power of load 4,5,6 supply capacitor 11.
As shown by the arrows in Figure 9, the electric power of battery 12 also is able to connect terminal N1,1DC-DC by the 1st
Transducer the 1, the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd connect terminal N3, to quilt
Protection load 6 supply.
In fig .9, control portion 10 makes FETQ1, Q2 of 1DC-DC transducer 1 carry out on-off action, disconnected
Open FETQ5, connect FETQ6.Thus, such as even if from battery 12 voltage less than drive by protection load 6
Required voltage, from the voltage of battery 12 after the 1st connects terminal N1 and the 1st electrical path S1, also can
Boosted by 1DC-DC transducer 1, with corresponding with by protection load 6.Further, the electric power after this conversion is from
1DC-DC transducer 1 connects end by the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd
Sub-N3, is provided to be protected load 6.
Or, control portion 10 can continue to disconnect the FETQ1 of 1DC-DC transducer 1, continues to turn on FETQ2,
Disconnect FETQ5, connect FETQ6.Thus, from battery 12 electric power by the 1st connection terminal N1, the 1st
Electrical path S1,1DC-DC transducer the 1, the 2nd electrical path S2, the 4th electrical path S4, FETQ6
And the 3rd connect terminal N3, be provided to be protected load 6.
In the case of above-mentioned, in 2DC-DC transducer 2, such as, can also disconnect FETQ3, Q4, (with reference to figure
2～Fig. 4), it is also possible to continue to disconnect FETQ3, continue to turn on FETQ4, it is also possible to make FETQ3, Q4 lead to
Disconnected action (with reference to Fig. 6).In fig .9, the circuit of 2DC-DC transducer 2 side that junction point Px rises is eliminated
Action and the diagram of supply condition of electric power.
Additionally, as shown by the arrows in Figure 10, regenerated electric power produced by electromotor 13 also is able to connect end by the 1st
Sub-N1,1DC-DC transducer the 1, the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd
Connect terminal N3, it is provided that give by protection load 6.
In Fig. 10, control portion 10 makes FETQ1, Q2 of 1DC-DC transducer 1 carry out on-off action, disconnected
Open FETQ5, connect FETQ6.Thus, even if the voltage of such as regenerated electric power is loaded 6 institutes less than driving by protection
The voltage needed, the voltage of regenerated electric power, also can be by the after the 1st connects terminal N1 and the 1st electrical path S1
1DC-DC transducer 1 boosts, with corresponding with by protection load 6.Further, the electric power after this conversion is from 1DC-DC
Transducer 1 connects terminal N3 by the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd,
It is provided to be protected load 6.
Or, control portion 10 can continue to disconnect the FETQ1 of 1DC-DC transducer 1, continues to turn on FETQ2,
Disconnect FETQ5, connect FETQ6.Thus, regenerated electric power is by the 1st connection terminal N1, the 1st electrical path
S1,1DC-DC transducer the 1, the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd are even
Connecting terminal N3, is provided to be protected load 6.
In the case of above-mentioned, in 2DC-DC transducer 2, such as, can continue to disconnect FETQ3, continue to turn on
FETQ4, it is possible to so that FETQ3, Q4 carry out on-off action (with reference to Fig. 5).In Fig. 10, connection is eliminated
The action of the circuit of 2DC-DC transducer 2 side that some Px rises and the diagram of the supply condition of electric power.
According to above-mentioned embodiment, the electric power from battery 12 can be by the 1st connection terminal N1, the 1st electric power road
Footpath S1,1DC-DC transducer the 1, the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd
Connect terminal N3 to be supplied to be protected load 6 (Fig. 2～Fig. 4).Now, in the case of the voltage of battery 12 is low,
1DC-DC transducer 1 can be utilized the boost in voltage of battery 12 to be become and to load 6 corresponding voltages with by protection.
And, regenerated electric power produced by electromotor 13 can be by the 1st connection terminal N1, the 1st electrical path
S1,1DC-DC transducer the 1, the 2nd electrical path S2,2DC-DC transducer the 2, the 3rd electrical path
S3 and the 2nd connects terminal N2 and supplies to capacitor 11, thus capacitor 11 charges (Fig. 5).Now,
In the case of the voltage of regenerated electric power is the most corresponding with electric capacity 11, it is possible to use 1DC-DC transducer 1 is to regeneration
The voltage of electric power carries out boosting with corresponding with capacitor 11, or utilizes 2DC-DC transducer 2 to regenerated electric power
Voltage carry out blood pressure lowering with corresponding with capacitor 11.
Further, when starting motor 4a work after idle stop, can be by the 2nd connection terminal N2, the 3rd electric power
Path S3,2DC-DC transducer 2, the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and
3 connect terminal N3 to the electric power (Fig. 7, Fig. 8) being carried out sufficient power from capacitor 11 by protection load 6 supply.Now, at electricity
In the case of the voltage of container 11 is low, it is possible to use 2DC-DC transducer the voltage of capacitor 11 is converted to
Voltage by protection load 6 correspondences.
Further, when starting when motor 4a works after idle stop and the voltage higher (more than setting) of capacitor 11
In the case of, can by the 2nd connection terminal N2, the 3rd electrical path S3,2DC-DC transducer 2, the
2 electrical path S2,1DC-DC transducer the 1, the 1st electrical path S1 and the 1st connect terminal N1 to negative
Carry 4,5 supplies and carry out the electric power (Fig. 7) of sufficient power from capacitor 11.Now, the voltage of capacitor 11 is with load 4,5 not
In the case of correspondence, it is possible to use 2DC-DC transducer 2 voltage of capacitor 11 is boosted with load
4,5 is corresponding, utilizes 1DC-DC transducer 1 voltage of capacitor 11 to carry out blood pressure lowering with right with load 4,5
Should.
Furthermore, it is also possible to by the 1st connection terminal N1, the 1st electrical path S1, the 5th electrical path S5, FETQ5,
4th electrical path S4 and the 3rd connects terminal N3, to the electric power (Fig. 6) by protection load 6 supply battery 12.
And, it is also possible to connect terminal N2, the 3rd electrical path S3,2DC-DC transducer the 2, the 2nd by the 2nd
Electrical path S2,1DC-DC transducer the 1, the 1st electrical path S1, the 5th electrical path S5, FETQ5,
4th electrical path S4 and the 3rd connects terminal N3, to the electric power (figure by protection load 6 supply capacitor 11
6).Now, the voltage of capacitor 11 with by protection load 6 the most corresponding in the case of, it is possible to use 2DC-DC
The voltage of capacitor 11 is boosted with corresponding with by protection load 6 by transducer 2, utilizes 1DC-DC to change
Device 1 carries out blood pressure lowering with corresponding with by protection load 6 to the voltage of capacitor 11.
Therefore, it is possible to electric power is stably supplied from battery 12 and capacitor 11 to load 4,5,6.Furthermore it is possible to
Increase respectively battery 12 and capacitor 11 electric power apply flexibly chance, thus effectively apply flexibly battery 12 and capacitor
The electric power of 11.Further, after regenerated electric power is stored in capacitor 11, to load 4,5,6 supply, it is possible to
Effectively apply flexibly regenerated electric power.
Additionally, in the above-described embodiment, owing to being provided with FETQ6 in the 4th electrical path S4, therefore pass through
Connect FETQ6, it is possible to by the 4th electrical path S4 to by protection load 6 supply batteries 12, capacitor 11
Electric power.And, by disconnecting FETQ6, it is possible to stop battery 12 or the electric power of capacitor 11 or regenerated electric power
The 4th electrical path S4 is leaked to unintentionally from the 2nd electrical path S2.Further, when FETQ6 disconnects, it is possible to utilize
DC-DC stops the electric power of battery 12 or regenerated electric power to pass through the 4th electrical path from the 5th electrical path S5 unintentionally
The diode D6 of S4, leaks to the 3rd electrical path S3 from the 2nd electrical path S2.
It addition, in the above-described embodiment, 1DC-DC transducer 1 arranges FETQ1, Q2,
2DC-DC transducer 2 arranges FETQ3, FETQ4, in the 5th electrical path S5 and the 4th electrical path S4
In be respectively provided with FETQ5 and FETQ6.Therefore, it is possible to the use of the switch element converted the voltage in device 100
It is 6 that quantity controls.
It addition, in the above-described embodiment, when starting motor 4a work after idle stop, according to current detecting part
The detected value of 15, is limited in the electric current flowing into 1DC-DC transducer 1 and does not hinders by the driving of protection load 6
Setting below.Therefore, when starting motor 4a work, even if to starting motor 4a and each load 4,5,6
The electric power of supply capacitor 11, it is also possible to prevent from dropping to harm from capacitor 11 to by the service voltage of protection load 6
Hinder the degree of the driving of this load 6 such that it is able to continue to be stably driven with being protected load 6.
Additionally, in the above-described embodiment, when starting motor 4a work after idle stop, if capacitor 11
Voltage is more than setting, then to starting motor 4a and the electric power of each load 4,5,6 supply capacitor 11, if
The voltage of capacitor 11 is less than setting, the most only to the electric power by protection load 6 supply capacitor 11.Therefore, exist
Even if the electric power making electricity container 11 drives the situation that the dump energy of capacitor 11 is the most too much by protection load 6
Under, it is possible to starting motor 4a and the electric power of each load 4,5,6 supply capacitor 11, thus effectively live
With.Additionally, capacitor 11 dump energy less to be only capable of driving by protection load 6 in the case of, Xiang Beibao
Protect the electric power of load 6 supply capacitor 11, it is possible to be stably driven with being protected load 6, effectively apply flexibly capacitor
The electric power of 11.That is, by regenerated electric power produced by electromotor 13 after capacitor 11 charges, it is possible to effectively live
Use this electric power.
The present invention is in addition to the foregoing, additionally it is possible to use various embodiment.Such as, at above embodiment
In, it is shown that in order to detect the electric current from 2DC-DC transducer 2 side inflow 1DC-DC transducer 1 and
Arrange between junction point Px and the input and output terminal T2 of 1DC-DC transducer 1 in 2nd electrical path S2
The example of current detecting part 15, but the present invention is not limited to this.In addition, for example, it is also possible to the 1st electricity
Between junction point Pz (Fig. 1) and the input and output terminal T1 of 1DC-DC transducer 1 on power path S2,
Or current detecting part is set on the earth lead (omitting diagram) of 1DC-DC transducer 1.So it also is able to utilize
Current detecting part detection is from the electric current of 2DC-DC transducer 2 side inflow 1DC-DC transducer 1.
Further, it is also possible to the junction point Px and the 2nd in the 2nd electrical path S2 connects arranges inspection between terminal N2
Flow measurement is through the 1st current detecting part of the electric current of 2DC-DC transducer 2, the connection in the 4th electrical path S4
Between some Py and the 3rd connection terminal N3, the 2nd current detecting part that detection flows through the electric current of FETQ6 is set.These feelings
Under condition, from the detected value of the 1st current detecting part, deduct the detected value of the 2nd current detecting part, it is possible to detect
Electric current from 2DC-DC transducer 2 side inflow 1DC-DC transducer 1.
Further, it is also possible at battery 12 and the 1st electrical path being connected between terminal N1 such voltage conversion dress
The outside putting 100 arranges current detecting part.In the case of Gai, by CAN etc. to the control of voltage conversion device 100
That output electric current measure portion of portion 10 detects, from 2DC-DC transducer 2 side inflow 1DC-DC transducer 1
Current value.
It addition, in the above-described embodiment, it is shown that connect in the 1st electrical path S1 and the 4th electrical path S4
The example of the bypass resistance being made up of the 5th electrical path S5 and FETQ5, but the present invention is not limited only to this, it is also possible to
Omit this bypass resistance.Figure 11 illustrates this example.
In fig. 11, such as, make 1DC-DC transducer 1 work, connect FETQ6.Thus, battery 12
The regenerated electric power of electric power or electromotor 13 is by the 1st connection terminal N1, the 1st electrical path S1,1DC-DC
Transducer the 1, the 2nd electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd connect terminal N3, are carried
Supply by protection load 6.Now, such as can also by continue disconnect 1DC-DC transducer 1 FETQ1,
Continuing to turn on FETQ2, electric power or regenerated electric power to battery 12 do not carry out voltage conversion and are supplied to be protected load
6.Or, it is also possible to by making FETQ1, Q2 of 1DC-DC transducer 1 carry out on-off action, to battery
12 or the voltage of regenerated electric power carry out boosting with corresponding with by protection load 6, supply these conversions to by protection load 6
After electric power.In 2DC-DC transducer 2, each FETQ3, Q4 can be disconnected, it is also possible to by only turning on
FETQ4 is "on" position.
Additionally, in fig. 11, such as, make 2DC-DC transducer 2 work, connect FETQ6.Thus, electric capacity
The electric power of device 11 is by the 2nd connection terminal N2, the 3rd electrical path S3,2DC-DC transducer the 2, the 2nd
Electrical path S2, the 4th electrical path S4, FETQ6 and the 3rd connect terminal N3, are provided to be protected negative
Carry 6.Now, such as, can also disconnect the FETQ3 of 2DC-DC transducer 2 by continuation, continue to turn on FETQ4,
The electric power of capacitor 11 is not carried out voltage conversion and be supplied to be protected load 6.Or, it is also possible to by making
FETQ3, Q4 of 2DC-DC transducer 2 carries out on-off action, the voltage of capacitor 11 is boosted with quilt
Protection load 6 is corresponding, the electric power after by protection load 6 this conversion of supply.In 1DC-DC transducer 1,
Each FETQ1, Q2 can be disconnected, it is also possible to be "on" position by only turning on FETQ2.
Additionally, in the above-described embodiment, it is shown that use MOSFETQ1～Q6 of N-channel type as the 1st～
The example of the 6th switch element, but the present invention is not limited only to this.In addition, P-channel type can such as be used
MOSFET.Moreover, it is also possible to use junction type FET to replace MOSFET.And, it is possible to use transistor
Or other switch elements such such as relay.
It addition, in embodiment of above, enumerated and applied the present invention to that there is idle stop function and deceleration regeneration
The vehicle of the function example of voltage conversion device 100, but it is not limited to this.For in addition, such as have
Deceleration regeneration function but not there is the voltage conversion of the vehicle voltage conversion device of idle stop function or other purposes
Device, also can apply the present invention.
Claims (10)
1. a voltage conversion device, described voltage conversion device is connected to the 1st DC source, the 2nd direct current
Power supply and load, be converted to different size of voltage by the voltage of each DC source and be supplied to described load,
Described voltage conversion device is characterised by possessing:
1st connects terminal, and it is connected with described 1st DC source；
2nd connects terminal, and it is connected with described 2nd DC source；
3rd connects terminal, and it is connected with described load；
1DC-DC transducer, it has the 1st input and output terminal and the 2nd input and output terminal；
2DC-DC transducer, it has the 3rd input and output terminal and the 4th input and output terminal；
1st electrical path, its one end is connected terminal and connects with the described 1st, the other end and described 1st input/output terminal
Son connects；
2nd electrical path, its one end is connected with described 2nd input and output terminal, and the other end is defeated with described 3rd input
Go out terminal to connect；
3rd electrical path, its one end is connected with described 4th input and output terminal, and the other end is connected end with the described 2nd
Son connects；And
4th electrical path, its one end is connected to the midway of described 2nd electrical path, and the other end is connected with the described 3rd
Terminal connects.
Voltage conversion device the most according to claim 1, it is characterised in that
Described 1DC-DC transducer is made up of elements below:
1st switch element and the 2nd switch element, they be connected in series in the same direction with described 2nd input/output terminal
Between son；
1st choking-winding, its one end is connected between described 1st switch element and described 2nd switch element, another
End is connected with described 1st input and output terminal；
1st capacitor, its one end is connected between described 1st input and output terminal and described 1st choking-winding, separately
One end ground connection；And
2nd capacitor, its one end is connected between described 2nd input and output terminal and described 2nd switch element, separately
One end ground connection,
Described 2DC-DC transducer is made up of elements below:
3rd switch element and the 4th switch element, they be connected in series in the same direction with described 3rd input/output terminal
Between son；
2nd choking-winding, its one end is connected between described 3rd switch element and described 4th switch element, another
End is connected with described 4th input and output terminal；
3rd capacitor, its one end is connected between described 4th input and output terminal and described 2nd choking-winding, separately
One end ground connection；And
4th capacitor, its one end is connected between described 3rd input and output terminal and described 4th switch element, separately
One end ground connection.
Voltage conversion device the most according to claim 2, it is characterised in that
Described 1DC-DC transducer can by from described 1st input and output terminal input voltage carry out boosting and from
Described 2nd input and output terminal output, and can will drop from the voltage of described 2nd input and output terminal input
Press and export from described 1st input and output terminal,
Described 2DC-DC transducer the voltage from described 3rd input and output terminal input can be carried out blood pressure lowering and from
Described 4th input and output terminal output, and can will rise from the voltage of described 4th input and output terminal input
Press and export from described 3rd input and output terminal.
4. according to the voltage conversion device described in any one in claims 1 to 3, it is characterised in that
Described voltage conversion device is also equipped with:
5th electrical path, its one end is connected to the midway of described 1st electrical path, and the other end is connected with the described 3rd
Terminal connects；And
5th switch element, it is arranged in described 5th electrical path.
5. according to the voltage conversion device described in any one in Claims 1-4, it is characterised in that
Described voltage conversion device is also equipped with the 6th switch element being arranged in described 4th electrical path.
6. according to the voltage conversion device described in any one in claims 1 to 3, it is characterised in that described
Voltage conversion device is also equipped with:
5th electrical path, its one end is connected to the midway of described 1st electrical path, and the other end is connected with the described 3rd
Terminal connects；
5th switch element, it is arranged in described 5th electrical path；
6th switch element, it is arranged in described 4th electrical path；And
Control portion, its each dc-dc of control and each switch element,
Described load is to need protection so that being loaded by protection of not declining of service voltage,
Large current load and the generation regeneration electricity of stream super-high-current during work it is connected in parallel on described 1st DC source
The electromotor of power,
Described 2nd DC source can store the regenerated electric power produced by described electromotor,
Described control portion is not in the case of described electromotor generates electricity, and when described large current load does not works, makes described
Each dc-dc works, and connects described 5th switch element, disconnects described 6th switch element,
Described control portion, when described large current load works, at least makes described 2DC-DC transducer work, and disconnects
Described 5th switch element, connects described 6th switch element.
Voltage conversion device the most according to claim 6, it is characterised in that
Described voltage conversion device is also equipped with detecting and flows into described 1DC-DC from described 2DC-DC transducer side
The current detecting part of the electric current of transducer,
Described control portion is not in the case of described electromotor generates electricity, when described large current load works, according to described
The detected value of current detecting part, is limited in the electric current flowing into described 1DC-DC transducer and does not hinders described protection
Below the setting of the driving of load.
8. according to the voltage conversion device described in claim 6 or 7, it is characterised in that
Described voltage conversion device is also equipped with detecting the voltage detection department of the voltage of described 2nd DC source,
Described control portion is not in the case of described electromotor generates electricity, when described large current load works,
If the voltage of described 2nd DC source that described voltage detection department detects is described more negative by protection than driving
More than the setting that voltage needed for load is big, then make described each dc-dc work, disconnect described 5th switch
Element, connects described 6th switch element,
If the voltage of described 2nd DC source is less than described setting, the most described control portion makes described 2DC-DC
Transducer works, and stops described 1DC-DC transducer, disconnects described 5th switch element, connect the described 6th
Switch element.
9. according to the voltage conversion device described in any one in claim 6 to 8, it is characterised in that
Described control portion, when described large current load does not works, makes described each dc-dc work, and connects institute
State the 5th switch element, disconnect described 6th switch element, from there through described each dc-dc and described
5 switch elements are to the described electric power being supplied described 2nd DC source by protection load, and switch by the described 5th
Element is protected the electric power of load described 1st DC source of supply to described,
When described large current load works, described control portion makes described each dc-dc work, and disconnects described
5th switch element, connects described 6th switch element, from there through described 2DC-DC transducer and the described 6th
Switch element is to the described electric power being supplied described 2nd DC source by protection load, and passes through described each DC-DC
Transducer supplies the electric power of described 2nd DC source to described large current load.
10. according to the voltage conversion device described in any one in claim 6 to 9, it is characterised in that
When described control portion produces regenerated electric power in described electromotor, make described each dc-dc work, connect
Logical described 5th switch element, disconnects described 6th switch element, thus utilizes described regenerated electric power to the described 2nd
DC source is charged, and is supplied described regeneration electricity to described by protection load by described 5th switch element
Power.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-031260 | 2015-02-20 | ||
| JP2015031260A JP6284496B2 (en) | 2015-02-20 | 2015-02-20 | Voltage converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105915055A true CN105915055A (en) | 2016-08-31 |
| CN105915055B CN105915055B (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610094588.0A Active CN105915055B (en) | 2015-02-20 | 2016-02-19 | Voltage conversion device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9843184B2 (en) |
| JP (1) | JP6284496B2 (en) |
| CN (1) | CN105915055B (en) |
| DE (1) | DE102016202638A1 (en) |
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| CN111434001A (en) * | 2017-12-30 | 2020-07-17 | 德州仪器公司 | Capacitor balancing driver circuit for dual input charger |
| CN114930268A (en) * | 2020-01-10 | 2022-08-19 | 罗姆股份有限公司 | Semiconductor device and semiconductor device system |
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| WO2015103096A1 (en) | 2013-12-30 | 2015-07-09 | 3M Innovative Properties Company | Poly (methylpentene) composition including hollow glass microspheres and method of using the same |
| US10385193B2 (en) | 2013-12-30 | 2019-08-20 | 3M Innovative Properties Company | Polyolefin composition including hollow glass microspheres and method of using the same |
| JP6361023B2 (en) * | 2014-07-17 | 2018-07-25 | パナソニックＩｐマネジメント株式会社 | Vehicle power supply system |
| US10407006B2 (en) * | 2017-07-21 | 2019-09-10 | Valeo North America, Inc. | Redundant supply for a can transceiver of a motor vehicle and methods of use thereof |
| US10644596B2 (en) * | 2017-12-01 | 2020-05-05 | Qatar University | Self-balanced non-isolated hybrid modular DC-DC converter based on low duty cycle operation and sequential capacitors charging/discharging for medium voltage DC grids |
| JP6732831B2 (en) * | 2018-04-10 | 2020-07-29 | 矢崎総業株式会社 | Power supply |
| JP6902061B2 (en) * | 2019-02-19 | 2021-07-14 | 矢崎総業株式会社 | Power distribution system |
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Also Published As
| Publication number | Publication date |
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| DE102016202638A1 (en) | 2016-08-25 |
| JP6284496B2 (en) | 2018-02-28 |
| JP2016154399A (en) | 2016-08-25 |
| US20160248247A1 (en) | 2016-08-25 |
| CN105915055B (en) | 2019-09-06 |
| US9843184B2 (en) | 2017-12-12 |
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